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Can you help me change imei on my new galaxy s3. I have old android phone and a new one, galaxy s3 but it's live demo unit and does not accept any sim card at all, probably all demo units are same, with strange imei. I have rooted him, and backup efs folder and i tried to edit with hxd hex editor nv_data.bin but nothing happend. So can anybody help me that i can replace this strange imei with imei that my older android phone has?